i have this issue when i tried to run my app in a physical device in debug mode. When I try to debug the next code:
class SocketService with ChangeNotifier {
ServerStatus _serverStatus = ServerStatus.Connecting;
SocketService() {
this._initConfig();
}
void _initConfig() async {
IO.Socket socket = IO.io('http://192.168.56.1:3000/', <String, dynamic>{
'transports': ['websocket'],
'autoConnect': true,
});
socket.on('connect', (_) {
print('connect');
});
socket.on('event', (data) => print(data));
socket.on('disconnect', (_) => print('disconnect'));
socket.on('fromServer', (_) => print(_));
}
}
And in my backend i have this:
file index.js
const express = require('express');
const path = require('path');
require('dotenv').config();
const app = express();
const server = require('http').createServer(app);
module.exports.io = require('socket.io')(server);
require('./sockets/socket');
const publicPath = path.resolve( __dirname, 'public' );
app.use( express.static( publicPath ) );
server.listen( process.env.PORT, ( err ) => {
if ( err ) throw new Error(err);
console.log('Servidor corriendo en puerto', process.env.PORT );
});
file socket.js
const { io } = require('../index');
io.on('connection', client => {
console.log('Cliente conectado');
client.on('disconnect', () => {
console.log('Cliente desconectado');
});
client.on('mensaje', ( payload ) => {
console.log('Mensaje', payload);
io.emit( 'mensaje', { admin: 'Nuevo mensaje' } );
});
});
In web works good and print's the 'disconnect' adn the 'connect' perfectly, but when i tried to debug in my cellphone, nothings happends, i don't get any message from the socket instance, if anyone knows how to solved this I would appreciate.
I figure out what was the problem, was with the AndroidManifest The way I solved was with the next code
In the <application>
I add this line android:usesCleartextTraffic="true"
The result was this:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.band_names">
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:label="band_names"
android:icon="@mipmap/ic_launcher"
android:usesCleartextTraffic="true">
<activity
android:name=".MainActivity"
android:launchMode="singleTop"
android:theme="@style/LaunchTheme"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
android:hardwareAccelerated="true"
android:windowSoftInputMode="adjustResize">
<!-- Specifies an Android theme to apply to this Activity as soon as
the Android process has started. This theme is visible to the user
while the Flutter UI initializes. After that, this theme continues
to determine the Window background behind the Flutter UI. -->
<meta-data
android:name="io.flutter.embedding.android.NormalTheme"
android:resource="@style/NormalTheme"
/>
<!-- Displays an Android View that continues showing the launch screen
Drawable until Flutter paints its first frame, then this splash
screen fades out. A splash screen is useful to avoid any visual
gap between the end of Android's launch screen and the painting of
Flutter's first frame. -->
<meta-data
android:name="io.flutter.embedding.android.SplashScreenDrawable"
android:resource="@drawable/launch_background"
/>
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<!-- Don't delete the meta-data below.
This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
<meta-data
android:name="flutterEmbedding"
android:value="2" />
</application>
</manifest>